I am a new Kanotix user: yesterday I installed it on HDD, and I got a few problems.

1) I can not change the time settings through GUI (System settings). I choose the right time zone, then I click on "Apply" and I get the error message 4. The system doesn't ask me the root password. The same thing happens when I try to set the time server to automatically synchronize the time.
How could solve this problem, through GUI or using the command line?